Top 50 PHP function example You Need to Know (2024 Update)

PHP function example : The PHP string functions are part of the PHP core. here learn to PHP implode, php isset, php foreach, php switch, php switch case, php break, php unset, php sleep, php random number

php print_r, php echo, php comment, php comments, php new line, php empty, php file_put_contents, php file_get_contents, php number format

PHP Built-in Functions – PHP function example

php preg_match, php strtotime, php round, php json_encode, php count, php $_server, php var_dump, php list, php exit

php for each, php else if, php memory limit, php delete file, php parsing url, session_encode php, include php, php htmlspecialchars, php excell or many more.

php implode

PHP function example

php foreach

";
}
?>

php switch

php switch case

php break

";
}
?>

php sleep

";


sleep(3);


echo date('h:i:s');
?>

PHP: isset(), unset() and empty()

PHP function example

php isset

$empty = '';
if(isset($empty)) {
	echo $empty. ' is also set.'; 
}

$untrue = false;
if(isset($untrue)) {
	echo $untrue. ' is also set.'; 
}

php unset

php empty

php random number

");
echo(rand() . "
");
echo(rand(10,100));
?>

php print_r

";

$b = array("Mithun"=>"35", "Bharat"=>"37", "jayesh"=>"43");
print_r($b);
?>

php echo

PHP is Fun!";
echo "Welcome Website!
";
echo "We are about to learn Angularjs, vuejs, jquery, javascript or PHP!
";
echo "I ", "Love ", "you ", "pakainfo ", "with infinityknow website.";
?>

php comment

single-line comments:

php comments

Syntax for multiple-line comments:

php new line

php file_put_contents

php file_get_contents

php number format

";
echo number_format("568956659",2)."
";
echo number_format("568985645",2,",",".");
?>

php preg_match

PHP preg_match() Function

php strtotime

");
echo(strtotime("9 October 2022") . "
");
echo(strtotime("+4 hours") . "
");
echo(strtotime("+2 week") . "
");
echo(strtotime("+3 week 9 days 6 hours 7 seconds") . "
");
echo(strtotime("next Monday") . "
");
echo(strtotime("last Sunday"));
?>

php round

");
echo(round(0.55) . "
");
echo(round(0.59) . "
");
echo(round(-4.39) . "
");
echo(round(-4.48));
?>

php json_encode

56, "Bharat"=>85, "jayesh"=>65);

echo json_encode($age);
?>

php count

Don’t Miss : PHP Array Functions

php $_server

";
echo $_SERVER['SERVER_NAME'];
echo "
";
echo $_SERVER['HTTP_HOST'];
echo "
";
echo $_SERVER['HTTP_REFERER'];
echo "
";
echo $_SERVER['HTTP_USER_AGENT'];
echo "
";
echo $_SERVER['SCRIPT_NAME'];
?>

php var_dump

";

$b = "Welcome Website!";
echo var_dump($b) . "
";

$c = 32.5;
echo var_dump($c) . "
";

$d = array("kohali", "rohit", "sachin");
echo var_dump($d) . "
";

$e = array(32, "Welcome Website!", 32.5, array("kohali", "rohit", "sachin"));
echo var_dump($e) . "
";

echo var_dump($a, $b) . "
";
?>

php list

php exit

php for each

"35", "Bharat"=>"37", "jayesh"=>"43");

foreach($player as $pl => $val) {
  echo "$pl = $val
";
}
?>

php else if

php memory limit

Extra step for WordPress sites

define( 'WP_MEMORY_LIMIT', '300M' );
define( 'WP_MAX_MEMORY_LIMIT', '300M' );

require_once(ABSPATH . 'wp-settings.php');

php delete file

PHP unlink() Function

php parsing url

session_encode php

include php

  
Welcome to the world
  

php htmlspecialchars

free download source code and demo.";
echo htmlspecialchars($user_content);
?>

php excell

require_once 'PHPExcel.php';
$objPHPExcel = new PHPExcel();

$objPHPExcel->getProperties()->setCreator("Pakainfo")
        ->setLastModifiedBy("Jagruti Pandya")
        ->setTitle("MS Office 2011 XLSX Welcome Document")
        ->setSubject("MS Office 2011 XLSX Welcome Document")
        ->setDescription("Welcome doc for MS Office 2011 XLSX, generated by PHPExcel.")
        ->setKeywords("MS office 2011 openxml php")
        ->setCategory("Welcome result file");
$objPHPExcel->getActiveSheet()->setTitle('infinityknow dot com');

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